save the db after test

Signed-off-by: Kristoffer Dalby <[email protected]>

integration/hsic/hsic.go

@@ -348,6 +348,14 @@ func (t *HeadscaleInContainer) Shutdown() error {
 		)
 	}
 
+	err = t.SaveDatabase("/tmp/control")
+	if err != nil {
+		log.Printf(
+			"Failed to save database from control: %s",
+			fmt.Errorf("failed to save database from control: %w", err),
+		)
+	}
+
 	return t.pool.Purge(t.container)
 }
 
@@ -393,6 +401,24 @@ func (t *HeadscaleInContainer) SaveMapResponses(savePath string) error {
 	return nil
 }
 
+func (t *HeadscaleInContainer) SaveDatabase(savePath string) error {
+	tarFile, err := t.FetchPath("/tmp/integration_test_db.sqlite3")
+	if err != nil {
+		return err
+	}
+
+	err = os.WriteFile(
+		path.Join(savePath, t.hostname+".db.tar"),
+		tarFile,
+		os.ModePerm,
+	)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 // Execute runs a command inside the Headscale container and returns the
 // result of stdout as a string.
 func (t *HeadscaleInContainer) Execute(